This is a rather old calculator, but it seems to still be working. It has some minor scratches from use, but I think it's in good condition overall. I'm not very knowledgeable about it, so please take a look if you're interested! This is a card-type SHARP PA-160 calculator, convenient for carrying around and equipped with basic calculation functions. - Model: PA-160 - Brand: SHARP - Function: Calculator - Size: Card type - Power: DC3V Thank you for looking.